Drain-tile outlet.



im A i f APPLICATION IILED NOV. 18, 1908.

f I.. f

me *ermeeY Parana onirica.

.Tantas FITZPATRICK, or roar DODGE, Iowa.

DRAIN-TILE burma?.

To all 'whom 'it may concern.'-

Be it known that I, JAMES FrrzrATRIcK, a citizen vof the United States, and a resident of the city of Fort Dodge, Webster county, Iowa, have invented certain new and useful Improvements in Drain-Tile Outlets; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, and tothe letters of reference marked thereon, which form a part of this specification. H Heretofore thel outlet end `of tile drains when set have lbeen frequently undermined by the water flowing in the ditch or stream into which the drain empties and in conse-V quence the tile sections drop away one by one into theditch, the dirt caving `1n and eventually a considerable cavity 1s washed i back into the land drained by the tile. This necessitates, of course, frequent repairs and renewals, more or less of this work being required of the farmer every year'entalhng much expense both for labor and for ref newal of' the tile sections that are thus washed away and lost. Furthermore, as tile d drains have usually been constructed shpuld a season of high water occur in the drainage ditch or stream, the water may flow back in the drain carrying more or less of floating refuse therewith, frequently theref by flooding thc land drained by the tile and by the raccumulation of sediment and refuse in the ditch, stop the same up to practically destroy its effective operation. Tile, however, has heretofore `been frequently rendered ineffective by being stopped up by muskrats, squirrels, and even skunks and rabbits and animals`of other kinds that inhabit low lands, and in consequence, soon fails to properly drain the surface intended. i" The object of this invention is to provide a tile drain outlet so constructed as to prevent the same washing out of the bank' under any flood or current conditions that are likely to arise and also to provide a tile drain outlet so constructed as to prevent the back flow of water from'the drainage ditch through the drain and also to prevent animals of anykind finding their way into the drain.`

.The invention further has for its object the construction ofl an exceedingly strong outlet section adapted to withstand injury caused by any fioating body in the drainage ditch and constructed of a length t'o prevent `Specification of Letters Patent.

the same washing out ofthe `bank under any conditions that are likely to arise.

It is also an object of the invention to afford a drain outlet section provided with a closure ada ted to prevent back liow and to exclude rom the drain any floating material that mightootherwise be drawn into `the drain. i

Finally it is an object of the invention to provide a drain outlet adapted at low water to be entirely closed to exclude the entrance of smallv animals. The invention consists in the matters hereinafter described and more fully pointed out and defined in the appended claims.

section taken through the bank alongside of a tile drain and showing the drain in elevation. Fig. 2 is an enlar ed longitudinal, vertical section of a part or the drain outlet. Fig. 3 is an end elevation of the-same. 4 is a .fragmentary detail illustrating ,the overlap of the outlet sections. Fig. 5 is a similar View illustrating the construction at the inner end of the outlet or at the point where the last tile section of the drain c'onnects with the outlet section.

the bank or soil to beI drained, B, the ditch, ,and C, indicates as a whole the drain outlet "section which is continuous with the drain tile sections 0,'arranged as usual. As shown,

rality of cylindric, sheet metal sections cc2-c3 -c, as shown four 1n number, though a greater or a less number may be used, 1f

gitudina] corrugated sheet metal,as shown in Figs. 1 and 2, the ends of which are brouglgi together in completing the section and riveted, as shown, the ends of said sections being complemental in size so that the vforward end of one section will interfit the rear end of the other, thus affording, when tiles-.inne are riveted together, as shown in Fig. 1, a tight, overlapping, corrugated joint, as shown.

Rigidly secured by riveting or otherwise on the outer end of the outlet section as a whole, is an apertured knuckle c", and pivotally engaged thereto by means of a pintle c, is a flap valve closure or gate o7, which, as shown, may be made of cast metal .and 1f so, may be provided -w1th ribs c", extending extends on each side of the knuckle c5, and

In the drawings: Figure 1 is a vertical i Fig.

"As shown in saidy drawings: A, indicatesdesired. Said s ections are formed of4 lon-I upwardly and parallel thereon, one of which4 .Patented Oct. 18, 1910. Application filed November 18, 1908. Serial No. 463,237.

said'outlet section is constructed of a plufloating body in the is a ertured to receive a pintle therethrough, saidJ er tile section therein and to afford a tight fit therewith.

The operation of the device 1s obvious from the construction described. The cor rugations in the outlet sections permit the same to be made of a much lighter gage of metal and at the same time to resist the crushing pressure of -the superposed soil thereon, and as well, increases the strength of thev outer end of the outlet section to resist any shock brou ht against it by any ditch.

`Vlhen the level of the water in Athe 'ditch is lower than the level of the Water on the land to be drained, the outward fluid pressure serves to raise the closure sufficiently to permit the outow,lbut the moment the level in the ditch becomes the same as the level of the area to be drained or rises above the same, the iow ceases for the reason that' gravity in the one case, in the other gravity and the inward pressure of the water would serve to effectively close the end of the drain. In this manner no foreign object can find its way into the drain. Neither can mud or'sediment find lodginent therein, and inasmuch as gravity at all times holds the drain closed, it follows that during dry seasons or during low waterl in Fthe ditch,

yanimalsi of any kind cannot find entrance-V ast the closure. In consequence, the drain 1s always ready for operation and the annoyance, delay and expense occasioned by the failure of a drain to operate is obviated. Of course, details of the construction may y be varied. I therefore do no t purpose limiting 'this a plication for patent otherwise than necessltated by the prior art.

I claim as my invention:

I 1. In a device of the class described a culvert comprising corrugated sections riveted together and the outer extremity of the section at one end non-corrugated to tightly receive a tile -section therein, a bearing rigidly secured on the top of the culvert opposite' from the. non-corrugated end, a

pintle secured thereto, a valve for closing against the end of the culvert and ribs rigidly secured thereto having the ends curved over the valve to engage the intle.

2. In a device of the class descri ed a culvert end comprising sections corrugated and secured together, the outer section having a perpendicular face and the outer end of the inner section shaped to receive' atile section ti htly therein,a gate valve hinged to the cu vert for the center of gravity to lieat the rear of the perpendicular face to thereby close the gate valve by gravity.

3.A drain til section comprising a plurality of cylindric sheet metal sections interiitting at the ends and riveted together, at v the inner end shaped to engage therein the end of the tile section, a gate valve for closing the end of the tile section, ribs integral therewith curved over the edge of the valve and an apertured hinge member rigidly secured to the outer side of the sheet metal section.

4. The combination with the tile in a tile drain of an outlet section having greater length than the tile section and comprising a plurality of corrugated sheet metal tubes or pi es shaped .at their inner ends to tit the tie, a plate adapted to close the end of the outlet section, strengthening ribs integral therewith curved over the periphery' thereof to provide hinge members and a hinge member rigidly secured to the top of the outlet section on the outside thereof.

5. The combination with a drain of an outlet section therefor ada ted to be wel] bedded in-the bank of the rainage ditch, a

metallic knuckle riveted on said section at its outer end, 'a gate provided with upwardly projecting lugs or ears adapted one to enl gage on each" side of the knuckle and a pintle extending through said lugs and knuckle to afford la hinge whereby the gate closes the -outlet section to all except outward pressure.

In testimony vwhereof I \have hereunto subs ibed my name in the presence of two 

